package org.example.library_management_system.Service;

import org.example.library_management_system.Model.UserInfo;
import org.example.library_management_system.mapper.IUserInfoMapper;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

@Service
public interface UserService {

    public String selectByUserName(String userName);

}
